All flocculants actually include the warning to NOT allow them to enter the (any) filter system. They must be vacuumed to waste.
A "simple" clarifier would be an alternate option, BUT if the filter is not operating at optimum performance or is undersized, then the clarifier would only be a "band-aid" on a much bigger issue.
Interesting! If the issue is an under performing and/or undersized filter and a "Simple" clarifier solved the issue at hand, one would then have to run some economics on the increased operating cost of an under performing filter vs purchasing a new one. Or if you have the money you could just upgrade the filter.